This question is highly arguable. I would look to notes/book for specific answer to answer this without argument, but you can argue a lot. Most of this region is Pierre Shale. Though "Top layer" would equate to soil, which is ambiguous. it is a mixture of Pierre shale detritus and organic material (what makes it essentially soil)... (if this is intro Geology this is still true, but look to your book for the answer because they don't want the real one). Soil, is not dirt, which is not detritus. If I haven't helped, Google those 3 and you can argue your case if it comes to that.
The top most layer has more salinity. But ignoring thermo-haline currents.
The crust. but if you are talking upwards, it is the troposphere. the word part "tropo-" could be related to the word "tropical," which contains much life. the word part "-sphere" could be related to the geometric shape, which is the shape of the earth, and surrounds it.
How long is a piece of string? Is your soil clay or sand or ...? Is it wet or dry or ...? Is it homogeneous or it has organic matter in it? How densely is your 'Litre' packed with the soil? Get a litre of milk. Drink it. Cut off the top of the bottle. Measure the bottle. Write it down. Fill ithe bottle with soil. Measure it. Take of the the empty bottle's weight from this weight. Multiply it by 100. Cheers, Szoroshun
If you're talking about the thinnest layer of the atmosphere, then it is the EXOSPHERE..
The mesosphere is where meteorites burn up. Most people call them shooting stars.
the top most layer of soil
Top soil means the top layer of soil
The top layer of soil where grass grows is called Humus. The next layer is the topsoil, and the layer after that is the subsoil.
The top layer of soil is the most fertile layer. It is the best for growing crops.
Because the soil on the Great Plains had been plowed over for decades, by farmers that did not yet have the advantage of agricultural science, the soil was very loose and when the drought and winds came, the top soil simply blew away because there was nothing left to hold it down.
Top soil
The Great Plains were exposed when the glaciers retreated at the end of the last ice age. As the glaciers melted they left behind deposits of silt and rocks. This exposed the soil of the Great Plains which is composed of two distinct layers. The top layer is composed of a mix of clay sand and silt that is generally well-drained. The bottom layer is composed of a mix of clay silt and sand and is much less permeable. This combination of layers has allowed for the development of a unique ecosystem in the Great Plains.The exposure of the soil on the Great Plains was also a result of human activities. Europeans began to settle the area in the 1800s and began to plow the land. This process exposed the soil making it easier to plant crops. As the population of the Great Plains grew more and more land was plowed further exposing the soil.Overall the soil of the Great Plains was exposed due to a combination of natural forces and human activities. The glaciers melting at the end of the ice age left behind deposits of silt and rocks while human activities such as plowing the land further exposed the soil. This combination of forces has allowed for the development of a unique ecosystem in the Great Plains.
Umm... let's see. The top layer is top-soil. The middle layer is sub-soil. The bottom layer is parent rock.... I think you've got the answer...... ;-) you're welcome!
This event was called the Dust Bowl. Due to drought, and land use practices, much of the top soil of the great plains was blown away in great clouds of dust.
hummus is important for the soil because the nutrients in the hummus is useful for the soil.the soil will get the nutrients and the in the soil the roots will start to grow and then later a plant will grow.
Topsoil.
Topsoil.